Improving Website Security with jQuery Captcha Plugins

Captcha is designed to recognize the difference between a bot and human and sometimes even malicious software to provide the security to your system. If you want to prevent the entry of bots into your website then you can start using the CAPTCHA as it is the smartest way to stop it.

Today we’ve collected 10 useful examples of captcha plugins using jquery, php, asp.net with tutorials that can be downloaded for free. We hope that these examples will help you to create your website security, please check out following plugins.

jQuery offers a plugin called validate which will allow you to create stunningly user friendly sign up forms, login addresses, contact forms and much more. The plugin is written and maintained by Jörn Zaefferer, a member of the jQuery team, lead developer on the jQuery UI team and maintainer of QUnit. In this tutorial you will learn how to create a signup form with advanced AJAX validation and CAPTCHA.

This tutorial is about to create a captcha same as recaptcha. CSS and PHP are used for this. You can find few tutorials about creating and integrating captcha/recaptcha in php over 99points, but now you can create your own recaptcha style captcha with php and jquery.

With all the captchas out there right now why would anyone reinvent the wheel and write another one. Well sometimes it’s pretty useful to write something new. Using the validation jQuery plugin and some help of php you’ll be able to create simple captcha.

This plugin is designed to help overcome automated form submission by requiring a “real person” to identify text made up of dots. The entered value is compared on the server with the generated value to determine whether processing should continue.

function RealPerson() {
this._defaults = {
length: 6, // Number of characters to use
includeNumbers: false, // True to use numbers as well as letters
regenerate: 'Click to change', // Instruction text to regenerate
hashName: '{n}Hash' // Name of the hash value field to compare with,
// use {n} to substitute with the original field name
};
}

Ajax Fancy captcha is a jQuery plugin that will help you protect your website pages from bots and spammers. The captcha is really intuitive way of completing “verify humanity” tasks. In order to do that you are asked to drag and drop specified item into the circle.